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Commit 56f8c9bc authored by Tetsuo Handa's avatar Tetsuo Handa Committed by James Morris
Browse files

TOMOYO: Remove next_domain from tomoyo_find_next_domain(). 



We can update bprm->cred->security inside tomoyo_find_next_domain().

Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: default avatarJames Morris <jmorris@namei.org>
parent ccf135f5

security/tomoyo/domain.c

+5 −5
Original line number Diff line number Diff line
@@ -787,12 +787,10 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char * 
 * tomoyo_find_next_domain - Find a domain.

 *

 * @bprm: Pointer to "struct linux_binprm".

 * @next_domain:    Pointer to pointer to "struct tomoyo_domain_info".

 *

 * Returns 0 on success, negative value otherwise.

 */

int tomoyo_find_next_domain(struct linux_binprm *bprm,

			    struct tomoyo_domain_info **next_domain)

int tomoyo_find_next_domain(struct linux_binprm *bprm)

{

	/*

	 * This function assumes that the size of buffer returned by
@@ -914,9 +912,11 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm, 
		tomoyo_set_domain_flag(old_domain, false,

				       TOMOYO_DOMAIN_FLAGS_TRANSITION_FAILED);

 out:

	if (!domain)

		domain = old_domain;

	bprm->cred->security = domain;

	tomoyo_free(real_program_name);

	tomoyo_free(symlink_program_name);

	*next_domain = domain ? domain : old_domain;

	tomoyo_free(tmp);

	return retval;

}

security/tomoyo/tomoyo.c

+2 −8
Original line number Diff line number Diff line
@@ -61,14 +61,8 @@ static int tomoyo_bprm_check_security(struct linux_binprm *bprm) 
	 * Execute permission is checked against pathname passed to do_execve()

	 * using current domain.

	 */

	if (!domain) {

		struct tomoyo_domain_info *next_domain = NULL;

		int retval = tomoyo_find_next_domain(bprm, &next_domain);



		if (!retval)

			bprm->cred->security = next_domain;

		return retval;

	}

	if (!domain)

		return tomoyo_find_next_domain(bprm);

	/*

	 * Read permission is checked against interpreters using next domain.

	 * '1' is the result of open_to_namei_flags(O_RDONLY).

security/tomoyo/tomoyo.h

+1 −2
Original line number Diff line number Diff line
@@ -31,8 +31,7 @@ int tomoyo_check_2path_perm(struct tomoyo_domain_info *domain, 
			    struct path *path2);

int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain,

				    struct file *filp);

int tomoyo_find_next_domain(struct linux_binprm *bprm,

			    struct tomoyo_domain_info **next_domain);

int tomoyo_find_next_domain(struct linux_binprm *bprm);



/* Index numbers for Access Controls. */